Change Data Capture (CDC) & Bulk Migration for PostgreSQL

Production-grade CDC and migration patterns for PostgreSQL logical replication, Debezium, and the operational realities.

PostgreSQL CDC and bulk migration are deceptively easy until you hit replication slot bloat, schema drift, and downtime SLAs.

Inside:

• Logical replication primer slots, publications, subscriptions
• Debezium + Kafka for CDC streams that survive failures
• Bulk migration playbook pg_dump, pg_restore, and the parallelism levers
• Schema evolution during live CDC the discipline that prevents 2 a.m. pages
• Validation & cutover dual-write, shadow-read, and zero-downtime patterns

Full guide on Medium.